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BOOMERANG ELAN - New Build & Setup Thread!

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BOOMERANG ELAN - New Build & Setup Thread!

Old 08-10-2010, 09:19 AM
  #51  
BaldEagel
 
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

If you plug both flap servo's into one Rx channel they will operate in the same direction therefore you need both servo's to be installed with the arms on the same side, this means one of the servo bodies will be towards the fus and the other will be towards the wing tip, this all means the captive nut for the ali rod has to be more outboard on one sub wing, Conversely if you have the flap servo's on seperate channels once one of them is revearsed................................I think you get the picture, I think it was all done so that those poor souls who use Spektrum or JR in the early days could use the seven channels they only had on their system.

Was that controversial, we need a devil smiley on here.

Mike[sm=tongue_smile.gif]
Old 08-10-2010, 09:55 AM
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mkranitz
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Perfect explanation!
Old 09-08-2010, 05:46 AM
  #53  
Stobe777
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Here´s some my Elan flying with a flycam:

[link=http://www.youtube.com/watch?v=erb8OQ7PbCQ]Elan flying with a camera[/link]

Tuomas
Old 09-08-2010, 08:06 AM
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petera38
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Put the second flight on my Elan on Saturday.
I´m not real comfortable with it, kind of "nervous" airplane....needs your attention all the time!
When I came back home, I did another balancing. Noticed that it was rather noseheavy...C of G was in front of Alan´s 25 cm from the trailing edge.
Moved my reciever batteries (2 x LiPo) to the back of the tank...and put the C of G back to 24 cm from the T.E.

Now it´s interesting to see if that helped...?

/Pete
Old 09-08-2010, 08:35 AM
  #55  
mkranitz
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I have put on 5 flights since completing the Élan and mine is also slightly nose heavy. She still flies fine, hhowever. I do not want to relocate two receiver packs, although it might help with high alpha landings! It flies great. Try backing off the throttle for more docile flying.
Old 09-08-2010, 08:50 AM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I´ve only got my Boomerang Sprint to compare with. The Sprint was a very stable platform, which flew- when trimmed out"-hands off!
The Elan, however feels different in a "nervous" way.
Compared with a flying buddy in Denmark, who´s also flying an Elan. He said that he flew with the C of G 23,5 cm from the T.E. and that felt good! Noseheavy the Elan didn´t fly that well, was his opinion.
Since my reciever packs are LiPo´s they are not permanently installed in the nose. I prefer to charge them outside the fuse...just in case. So moving them aft didn´t represent any problems.

/Pete
Old 09-08-2010, 12:51 PM
  #57  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I ended up with two A123's under the tank and a three cell A123 between the wheel wells and no UAT to get the C of G where I wanted it, but it still dropped its nose in turns and needed down elevator inverted, I don't know where the C of G ended up, but it was way back from the original in the instructions.

In its flying condition, but empty of fuel putting the Elan back on its tail it would stay there, but with the slightest bit of a nudge it would go back onto its nose wheel, any further back and it got a bit elevator sensitive, this does not necessarily mean this is the definitive position, but is where I preferred it to be, please feel free to discuss this further everyone.

Mike
Old 09-08-2010, 03:03 PM
  #58  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

This has all been discussed before, cg is exactly on main gear down, full uat empty tank, end of.
Old 11-30-2010, 05:18 AM
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Lil Hoss
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Hey Guys,
I am now building me second Elan (new version)
The last Elan I build while setting the CG it was nose heavy. I had to add weight to the rear.
I am trying not to add useless weight to set the CG
Should I favor the front or the back while installing the batteries, fuel pump,smoke pump,,,,ETC???
I am hoping that while installing the RX battery and the ECU battery, I will just have to ajust the location of the batteries to set the CG

Thanks Guys

Hoss
Old 12-01-2010, 03:32 AM
  #60  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

ORIGINAL: BaldEagel

I ended up with two A123's under the tank and a three cell A123 between the wheel wells and no UAT to get the C of G where I wanted it, but it still dropped its nose in turns and needed down elevator inverted, I don't know where the C of G ended up, but it was way back from the original in the instructions.

In its flying condition, but empty of fuel putting the Elan back on its tail it would stay there, but with the slightest bit of a nudge it would go back onto its nose wheel, any further back and it got a bit elevator sensitive, this does not necessarily mean this is the definitive position, but is where I preferred it to be, please feel free to discuss this further everyone.

Mike
Do you guys ever read the thread, even two posts back would have helped answer your question, no wonder you get statements like madmodelman made "end of" and the occasional "period" from the US contributors, I wonder if the US guys who use the expresion know what a "period" in the UK is, I don't think so. LOL as a hint its close too Fanny Packs.

Mike
Old 12-01-2010, 10:03 AM
  #61  
Tom Antlfinger
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Hi Hoss:

Give Dave Elsinger a call about CG and equiptment position. He, Bob Schultheis, and Marv Ingerson have more flights on their Elans than anyone I know of round here........probably 600-700+......

Tom

Old 01-25-2011, 12:27 PM
  #62  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Anyone know what improvements/changes have been made it the latest run of kits? I'm thinking about pulling the trigger on one
Old 01-25-2011, 06:04 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I love the elan... but almost all of the questions above are answered in the other build thread. we have been down this road already. spend a 12pack and a couple of nights and you are ready to build.. with emphasis onthe 12pack.

I fought that thing getting the tanks in, the radio tray the extra tray, the fuel tray the AD on the tank mounts, the flap servos, the servo mounts, the gear install, the CG, the Stab incidence...... Its all there..
Old 01-25-2011, 06:06 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!


ORIGINAL: Lil Hoss

Hey Guys,
I am now building me second Elan (new version)
The last Elan I build while setting the CG it was nose heavy. I had to add weight to the rear.
I am trying not to add useless weight to set the CG
Should I favor the front or the back while installing the batteries, fuel pump,smoke pump,,,,ETC???
I am hoping that while installing the RX battery and the ECU battery, I will just have to ajust the location of the batteries to set the CG

Thanks Guys

Hoss
depends on the motor weight!!
Old 01-25-2011, 06:46 PM
  #65  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I've read the full élan build thread and this one plus the manual. One thing I'm trying to figure out is what exactly holds the wing on? It looks as if the wing bolts just pinch the wing pins and don't actually penetrate the wingpin to lock the wing in place. Am I correct? Doesnt seem like much keeping a wing panel on if so. Are some people modifying this if so?
Old 01-25-2011, 06:54 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I actually drilled through the front anti-rotation pins and tapped for 4/40. The rear bolts were left so they just pinched the pin.
Old 01-25-2011, 07:07 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Yeah I saw you had done that on yours but it didn't seem like many others did. Or if they did they didn't talk about it. Just wondering if there were others that thought that could be a weak link
Old 01-25-2011, 07:50 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!


ORIGINAL: BoomerSooner

I've read the full élan build thread and this one plus the manual. One thing I'm trying to figure out is what exactly holds the wing on? It looks as if the wing bolts just pinch the wing pins and don't actually penetrate the wingpin to lock the wing in place. Am I correct? Doesnt seem like much keeping a wing panel on if so. Are some people modifying this if so?
The screws just pinch against the alum dowels. its quite effective. I did not feel the need to drill them. they never let loose.. some guys did drill, but I never saw the need. I never saw a wing panel slip in 150 flights
Old 02-03-2011, 03:41 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I have a question, keep in mind I am new to complex models.

I am installing the pull cables for the nose steering to the servo.

* I am assuming the cables needs to be somewhat tight with gear down so that there is no play. I guess it is ok that they rub on the wood where they go through the hole?

* When I retract the gear with my hand pump it sometimes jambs the metal clevis attached to the nosewheel on the wood mount, also when retracted the the clevises are pointing "up" and the cables are bent 90 degrees and a little tight.

Does anyone have any photos of there cables at the nosewheel when retracted?

Thanks

Buz
Old 02-03-2011, 05:38 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!


ORIGINAL: buz914

I have a question, keep in mind I am new to complex models.

I am installing the pull cables for the nose steering to the servo.

* I am assuming the cables needs to be somewhat tight with gear down so that there is no play. I guess it is ok that they rub on the wood where they go through the hole?

* When I retract the gear with my hand pump it sometimes jambs the metal clevis attached to the nosewheel on the wood mount, also when retracted the the clevises are pointing ''up'' and the cables are bent 90 degrees and a little tight.

Does anyone have any photos of there cables at the nosewheel when retracted?

Thanks

Buz
Use the clevis on the servo arm, not the tiller! Just loop the cable through the tiller and crimp. All your problems will disappear
Old 02-03-2011, 05:50 PM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Thanks Todd!

That makes a lot more sense. Now I won't have to call you tomorrow.

Your gear kit came with 4 clevises, so I used them!

Thanks again

Buz
Old 02-04-2011, 01:13 AM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Also buz leave a bit of slack in the cables to ensure the nose wheel extends, if too tight they can stop the gear from locking down.

Mike
Old 02-05-2011, 01:58 PM
  #73  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!


ORIGINAL: petera38

Put the second flight on my Elan on Saturday.
I´m not real comfortable with it, kind of ''nervous'' airplane....needs your attention all the time!
When I came back home, I did another balancing. Noticed that it was rather noseheavy...C of G was in front of Alan´s 25 cm from the trailing edge.
Moved my reciever batteries (2 x LiPo) to the back of the tank...and put the C of G back to 24 cm from the T.E.

Now it´s interesting to see if that helped...?[img][/img]

/Pete
Pete, it should sit on its tail by itself when its at landing fuel. It will make all the difference.. I dont remember the numbers but the nose has to be light or its hard to land. You should be able to wheelie down the runway after landing. You may end up putting a washer under the back mount on the tail as well for incidence. that was all the adjustments I made other than a tad of down thrust. If its nervous, then slow down the controls.
Old 02-06-2011, 06:41 AM
  #74  
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

Hi Goose,

Yeah ..I remember you wrote that earlier in this thread...or perhaps it was another thread. They pop up like mushrooms these Elan threads, and lots of questions about C of G.

/Pete

Old 02-12-2011, 10:49 AM
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Default RE: BOOMERANG ELAN - New Build & Setup Thread!

I was lucky enough to test fly two Elans today, from the last batch of kits made. Different turbine set-ups P-80SE and P-120SX and both pre set with a rearward balance point from the start based on experience with the type. Both flew great, but required a lot of up trim-more than I'd expect. We decided to pack one of the models tail using 1mm washers between the fin top and tailplane mounting plate, on the rear screws only. Elevator trim was then centred.
Anyone about to test a newish Elan be prepared for some up trim. Its within the elevator trim range so can easily be dealt with.
Other than than they were two nice aeroplanes.

Dw
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